Keystones — Cornerstone
Five GCSE retrieval questions · 2 September 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 199 + 718
Answer: 199 + 718 = 917 -
2. Algebra
What is the next term? 7, 28, 112, 448, ...
Answer: 1792 -
3. Geometry
Find the area of a right triangle with base 9cm and height 10cm
Answer: 45cm² -
4. Ratio
Simplify the ratio 12:28
Answer: 3:7 -
5. Statistics
Calculate the mean of: 47, 31, 48, 28, 22, 16, 17
Answer: 29.9